Britney's been the undisputed princess of pop since she donned a schoolgirl outfit in the '...Baby One More Time' video - and she's courted controversy to make the leap to queendom. Be it snogging Madonna, shaving off her locks or exposing herself on stage, she's spent much of her career exploiting that well-trodden line between ingenue and Lolita. With 'If U Seek Amy', however, she stumbles right over it.

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Musically, the song is one of the better tracks from last year's Circus album - a bolshy electropop stomper that keeps you on your toes throughout. However, by jettisoning any subtlety from the lyrics, Britney loses half of her appeal. The double entendre of the title just doesn't work in the context of the surrounding lines, meaning it gets more and more irritating with each Auto-Tuned delivery. While there's something to be said for a bit of brazenness, Britney should remember that sometimes less is more.